mirror of
https://github.com/opencontainers/runc.git
synced 2026-07-11 22:37:14 +08:00
Kir Kolyshkin
8f1b4d4a6f
This is a better place as cgroups itself is using these.
Should help with moving more stuff common in between fs and fs2 to
fscommon.
Looks big, but this is just moving the code around:
fscommon/{fscommon,open}.go -> cgroups/file.go
fscommon/fscommon_test.go -> cgroups/file_test.go
and fixes for TestMode moved to a different package.
There's no functional change.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
104 lines
2.1 KiB
Go
104 lines
2.1 KiB
Go
// +build linux
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package fscommon
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import (
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"io/ioutil"
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"math"
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"os"
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"path/filepath"
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"strconv"
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"testing"
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"github.com/opencontainers/runc/libcontainer/cgroups"
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)
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const (
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cgroupFile = "cgroup.file"
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floatValue = 2048.0
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floatString = "2048"
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)
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func init() {
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cgroups.TestMode = true
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}
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func TestGetCgroupParamsInt(t *testing.T) {
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// Setup tempdir.
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tempDir, err := ioutil.TempDir("", "cgroup_utils_test")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(tempDir)
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tempFile := filepath.Join(tempDir, cgroupFile)
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// Success.
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err = ioutil.WriteFile(tempFile, []byte(floatString), 0o755)
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if err != nil {
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t.Fatal(err)
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}
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value, err := GetCgroupParamUint(tempDir, cgroupFile)
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if err != nil {
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t.Fatal(err)
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} else if value != floatValue {
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t.Fatalf("Expected %d to equal %f", value, floatValue)
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}
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// Success with new line.
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err = ioutil.WriteFile(tempFile, []byte(floatString+"\n"), 0o755)
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if err != nil {
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t.Fatal(err)
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}
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value, err = GetCgroupParamUint(tempDir, cgroupFile)
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if err != nil {
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t.Fatal(err)
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} else if value != floatValue {
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t.Fatalf("Expected %d to equal %f", value, floatValue)
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}
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// Success with negative values
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err = ioutil.WriteFile(tempFile, []byte("-12345"), 0o755)
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if err != nil {
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t.Fatal(err)
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}
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value, err = GetCgroupParamUint(tempDir, cgroupFile)
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if err != nil {
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t.Fatal(err)
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} else if value != 0 {
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t.Fatalf("Expected %d to equal %d", value, 0)
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}
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// Success with negative values lesser than min int64
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s := strconv.FormatFloat(math.MinInt64, 'f', -1, 64)
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err = ioutil.WriteFile(tempFile, []byte(s), 0o755)
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if err != nil {
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t.Fatal(err)
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}
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value, err = GetCgroupParamUint(tempDir, cgroupFile)
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if err != nil {
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t.Fatal(err)
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} else if value != 0 {
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t.Fatalf("Expected %d to equal %d", value, 0)
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}
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// Not a float.
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err = ioutil.WriteFile(tempFile, []byte("not-a-float"), 0o755)
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if err != nil {
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t.Fatal(err)
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}
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_, err = GetCgroupParamUint(tempDir, cgroupFile)
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if err == nil {
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t.Fatal("Expecting error, got none")
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}
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// Unknown file.
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err = os.Remove(tempFile)
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if err != nil {
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t.Fatal(err)
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}
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_, err = GetCgroupParamUint(tempDir, cgroupFile)
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if err == nil {
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t.Fatal("Expecting error, got none")
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}
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}
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